Over the last few years devices have produced some impressive sounds
from a tiny crappy looking almost-flat speaker.

For example, many cells phones have a "no hands" mode where the tiny
speaker can easily projects the sound for several yards.

My USB memory device can also play music and the sound is very
impressive for such a tiny, weany, small speaker.

How the heck is this done?

(1) Is it done by better compenents like stronger magnets, stiffer cone
materials, longer or shorter (?) throw voicecoils, etc.

(2) A lot of devices have acoustic processing like SRS Labs's "WOW!"
but I don't think we has that a few years ago when the better speakers
started showing up.

How is it done?